Packaging bag bottom folding device

Abstract

The utility model discloses a packaging bag bottom folding device which is characterized in that the packaging bag bottom folding device comprises a first transmission belt (2) and a second transmission belt (5) which are arranged up and down, the first transmission belt (2) is connected with a first bottom folding plate (9), the second transmission belt (5) is connected with a second bottom folding plate (4), and the vertical height of the first bottom folding plate (9) and the vertical height of the second bottom folding plate (4) are kept flush. According to the bottom folding device, the structure of the bottom folding device is simplified, and the efficiency and stability of bottom folding operation are guaranteed.

Description

Technical Field

[0001] The utility model relates to bag making equipment, in particular to a bottom folding device for packaging bags. Background Art

[0002] The bag making machine is a special equipment used for the automated production of packaging bags. One type of packaging bag is square after production. In order to facilitate packing, the bag needs to be folded and flattened. During the flattening process, the bottom folding device is required to squeeze the bottom of the bag to ensure that the bottom of the bag is folded inward to form an M-bottom shape. A Chinese patent document (publication number: CN 209794715U; publication date: December 17, 2019) discloses a novel non-woven bag folding machine, comprising a frame and a folding channel, characterized in that: two bottom support mechanisms (8) are arranged in front and back on the path of the folding channel, two left and right horizontal guide rails (9) are installed on the frame on both sides of the folding channel, the two bottom support mechanisms (8) are respectively slidably arranged on the two horizontal guide rails (9) through horizontal slides (12), and the horizontal slides (12) are transmission-connected to a translational power source (7) that drives the horizontal slides (12) to move on the horizontal guide rails (9); the bottom support mechanism (8) comprises a bottom plate (80), a bottom support member (85) and a bottom support power source (81), the bottom support member (85) is transmission-connected to a bottom support power source (81) that drives the bottom support member (85) to move up and down, and the bottom support power source (81) is installed on the bottom plate (80).

[0003] In the above technical scheme, the bottom support member cooperates with the bottom folding operation. In order to improve the effect of the bottom folding, two bottom support members are set to move back and forth to perform the bottom folding operation. However, in order to ensure that the two bottom support members do not interfere with each other during the reciprocating movement and give way after the bottom folding is completed, the movement of the bottom support member requires two power components, namely a translational power source and a bottom support power source, to drive the bottom support member to move horizontally and lift along a U-shaped trajectory. This results in a complex structure of the equipment, many power drive parts, and inconvenient production and assembly. In addition, the moving trajectory of the bottom support member is long, which leads to a long time for its reciprocating movement, affecting the overall processing efficiency of the equipment. Utility Model Content

[0004] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a packaging bag bottom folding device for solving the above-mentioned problem.

[0005] To this end, the utility model is implemented by adopting the following scheme:

[0006] A packaging bag bottom folding device is characterized by comprising a first transmission belt and a second transmission belt arranged up and down, the first transmission belt is connected to a first folding bottom plate, the second transmission belt is connected to a second folding bottom plate, and the vertical heights of the first folding bottom plate and the second folding bottom plate are kept flush.

[0007] The first transmission belt passes around a first transmission wheel, and the first transmission wheel is connected to the output end of the first motor. The second transmission belt passes around a second transmission wheel, and the second transmission wheel is connected to the output end of the second motor.

[0008] A first slide rail is connected to the first folding bottom plate, the first slide rail cooperates with a first slide seat, the first slide seat is fixed on a second slide seat, the second slide seat cooperates with a second slide rail fixed on a frame plate, a third slide rail is connected to the second folding bottom plate, the third slide rail cooperates with a third slide seat, the third slide seat is fixed on a fourth slide seat, the fourth slide seat cooperates with a fourth slide rail fixed on the frame plate, the second slide rail is arranged in parallel with the fourth slide rail, the first slide rail and the third slide rail are arranged in parallel, and the first slide rail and the second slide rail are arranged vertically.

[0009] A packaging bag bottom folding device according to the above technical solution sets two bottom folding plates on corresponding transmission belts, and the heights of the two bottom folding plates are kept flush. By controlling one of the transmission belts to drive the corresponding bottom folding plate to move to one side of the bag folding station, bottom folding processing can be achieved, while the other transmission belt drives the corresponding bottom folding plate to move to the other side of the bag folding station to make way, ensuring that it will not interfere with the bottom folding operation. The heights of the two bottom folding plates are kept flush, and there is no need to control the lifting and lowering of the bottom folding plates during operation, which reduces the power drive parts of the equipment and effectively simplifies the structure of the equipment. The bottom folding plate can be driven to move by a single drive part, which also improves the stability and speed of the bottom folding plate operation, thereby ensuring efficient and high-quality operation of the bottom folding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model has the following drawings:

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 for Figure 1 Another perspective of the view. DETAILED DESCRIPTION

[0013] As shown in the figure, the utility model discloses a packaging bag bottom folding device, including a first transmission belt 2 and a second transmission belt 5 arranged in an upper and lower position. Specifically, the first transmission belt 2 passes through a first transmission wheel 3, and the first transmission wheel 3 is connected to the output end of the first motor 1. The second transmission belt 5 passes through a second transmission wheel 6, and the second transmission wheel 6 is connected to the output end of the second motor 7. Of course, according to different usage requirements, the same motor can also be used to simultaneously drive the first and second transmission wheels to rotate, thereby driving the first and second transmission belts to move. The first transmission belt 2 is connected to a first folding bottom plate 9, and the second transmission belt 5 is connected to a second folding bottom plate 4. The vertical heights of the first folding bottom plate 9 and the second folding bottom plate 4 are kept flush. Furthermore, a first slide rail 10 is connected to the first folding bottom plate 9, and the first slide rail 10 cooperates with the first slide seat 11, the first slide seat 11 is fixed on the second slide seat 13, the second slide seat 13 cooperates with the second slide rail 12 fixed on the frame plate 8, and a third slide rail 14 is connected to the second folding bottom plate 4, the third slide rail 14 cooperates with the third slide seat 17, the third slide seat 17 is fixed on the fourth slide seat 15, the fourth slide seat 15 cooperates with the fourth slide rail 16 fixed on the frame plate, the second slide rail 12 is arranged in parallel with the fourth slide rail 16, the first slide rail 10 and the third slide rail 14 are arranged in parallel, and the first slide rail 10 and the second slide rail 12 are arranged vertically. By setting the slide rail and slide seat mechanism, the first and second folding bottom plates can be guided to extend to the bottom supporting station or shrink inward to make way in a direction perpendicular to the moving direction of the bag bottom when moving to the transmission wheel, so that the moving track of the folding bottom plate is smaller, the space occupied by it when in use is reduced, and the internal structure layout of the equipment can be more compact.

[0014] The working principle of the utility model is as follows: when the packaging bag is delivered to the folding station, the second transmission belt 5 drives the second folding bottom plate 4 to move to the bottom folding station. At this time, the moving speed of the second folding bottom plate 4 is slower than that of the packaging bag. The second folding bottom plate 4 is squeezed and contacted with the bottom of the bag body, so that the bottom of the bag body is folded inward to form an M bottom. Then, the second transmission belt 5 drives the second folding bottom plate 4 to move at the same speed as the packaging bag until the packaging bag is folded. Then, the second transmission belt 5 drives the second folding bottom plate 4 to move quickly and escape from the bottom of the bag. Then, when the second transmission belt 5 drives the second folding bottom plate 4 to move to the turning point of the transmission wheel, the third slide rail 14 and the third slide rail 17 cooperate to fold the second folding bottom The plate 4 is guided, thereby driving the second folding bottom plate 4 to retract and move, and then the second transmission belt 5 drives the second folding bottom plate 4 to move back, and the first transmission belt 2 has driven the first folding bottom plate 9 to move to the bottom folding station to cooperate in folding the bottom. During the return process of the second folding bottom plate 4, since it has retracted, even if the heights of the first and second folding bottom plates are the same, there will be no interference or collision during the movement of the two, until the first folding bottom plate 9 completes the bottom folding processing and retracts in cooperation with the second slide rail and the slide seat. At this time, the second folding bottom plate 4 has extended outward to the bottom folding station with the cooperation of the third slide rail 14 and the third slide rail 17, and the bottom folding operation is carried out in this cycle.

[0015] The structure of the utility model arranges two folding bottom plates on corresponding transmission belts, and the heights of the two folding bottom plates are kept flush. By controlling one of the transmission belts to drive the corresponding folding bottom plate to move to one side of the bag folding station, the bottom folding processing can be realized, and the other transmission belt drives the corresponding folding bottom plate to move to the other side of the bag folding station to make way, ensuring that it will not interfere with the bottom folding operation. The heights of the two folding bottom plates are kept flush, and there is no need to control the lifting of the folding bottom plates during operation, so that the power driving parts of the equipment are reduced, and the structure of the equipment is effectively simplified. The folding bottom plate can be driven to move by a single driving part, which also improves the stability and speed of the operation of the folding bottom plate, and ensures that the bottom folding operation is efficient and high-quality.

Claims

1. A packaging bag bottom folding device, characterized in that: The invention comprises a first transmission belt (2) and a second transmission belt (5) which are arranged in a vertical direction, wherein the first transmission belt (2) is connected to a first folding bottom plate (9), and the second transmission belt (5) is connected to a second folding bottom plate (4), and the vertical heights of the first folding bottom plate (9) and the second folding bottom plate (4) are kept flush with each other, the first transmission belt (2) passes around a first transmission wheel (3), and the first transmission wheel (3) is connected to the output end of a first motor (1), the second transmission belt (5) passes around a second transmission wheel (6), and the second transmission wheel (6) is connected to the output end of a second motor (7), or the same motor is used to simultaneously drive the first and second transmission wheels to rotate, thereby driving the first and second transmission belts to move.

2. A packaging bag bottom folding device according to claim 1, characterized in that The first folding bottom plate (9) is connected to a first slide rail (10), the first slide rail (10) cooperates with a first slide seat (11), the first slide seat (11) is fixed on a second slide seat (13), the second slide seat (13) cooperates with a second slide rail (12) fixed on a frame plate (8), the second folding bottom plate (4) is connected to a third slide rail (14), the third slide rail (14) cooperates with a third slide seat (17), the third slide seat (17) is fixed on a fourth slide seat (15), the fourth slide seat (15) cooperates with a fourth slide rail (16) fixed on the frame plate, the second slide rail (12) and the fourth slide rail (16) are arranged in parallel, the first slide rail (10) and the third slide rail (14) are arranged in parallel, and the first slide rail (10) and the second slide rail (12) are arranged vertically.

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